If no one here knows then dose anyone know where I can ask for the answer to my question?

Both, Top-down and isometric, depending on the complexity of the area.

Is there any way one can get there hands on and play on windows japanese mobile phone games? I would like to map these games.

three specific games I am looking for are lady stalker mobile
https://www.legendra.com/rpg/fiche-galerie-1-supports_id-30-rpg_id-1034-type-screen-rpg-lady_stalker_mobile.html
https://archive.fo/Q97VT

athena full throttle
https://www.youtube.com/watch?v=oP3mLoOsMOk
https://alchetron.com/Athena:-Full-Throttle

The Legend of Valkyrie mobile games
http://hg101.kontek.net/valkyrie/valkyrie.htm
https://www.youtube.com/watch?v=cHb5ljQPpWc

It seems that G2 has 103 unique levels and these levels are fliped or rotated in 4 directions for a total of 412 different levels. So if the game gose up to 999 then all levels are repeated 2x and some 3x.
the same gose for the treasure rooms and secret rooms.
I will only do the 103 unique rooms ( I will not do the othe 3 rotated ones) as well as the treasure rooms and secret rooms.

Is anyone doing gauntlet 2 the arcade game?
If not then I think I might map it.
That and maybe shackled (breywood in japan)
anyone know how many levels gauntlet2 has?

I think what you are looking for is a tilemap viewer to what MAME has but I dont think anyone knows of such a program or if it even exists for the genesis.
the best emulator for doing maps would have to be gens-rerecording because it has the option "pink background" to turn the transparent layers pink insted of black as well as sprite & BG layer selection and cheat code input. for cheat cods go to http://gamehacking.org/
Another program you can use is http://www.smspower.org/maxim/Software/ScreenshotAutostitcher

good luck

I have continued on with SNES popfulmail but planing on doing next The Legend of Oasis and The Legend Of Valkyrie (psx remake)
I will only to the first areas as a try out to see how well I can map it and if all goes well, then I will finish them.
also doing legend of blacksilver (C64)

what are some of the best sites (and safest) to download ROMs & ISOs from? also emulators.
It seems a lot of sites offer bad dumps of CD/DVD games (and emulators with hidden software)that you have to register, pay, download some suspicious software as well as other crap.

I am putting SNES popfulmail and GEN/MD Ys3 on hold to make new maps of  rygar and magic sword arcade.

I finally got an email from MAMEDEV and the rumors are false. They dont have the rom or wip drivers.
so no luck there.
 

So far no response from mamedev.
Any ideas? or do I call it quits.

I have finished with Hercs Adventure and its 121MB in size.
this project was not easy. I am glad I did it because I dont think anyone ells would have.
the size of the file made me switch to a corei7 2.4 with 12 GB ram.
this is the biggest size single map and first clean complete PS1 map I have done.
thanks to my brother and Trop for helping me complete it.

I have decided to try one more time with MM2 by trying to confirm the rumor about it in being in the  MAME wip drivers by contacting the mamedev team. And if so asked them for the games maps.
Lets see if they reply.

Can anyone help?
I have mostly finished with H.A. but there are a lot of un-mapped black areas that I cant get to. I am using PSX1.13

Thanks for the complement but I just want to say that if it wasn't for my brother's help (for making the cheat codes to access the howl map) I would not have been able to make the maps look this good.
So... he gets some of the credit.